Nano-structured VO2 based films for space application and radiative environment

Abstract

Recently, there has been a growing interest in the development of small satellites with more up-to-date technologies comparable to large conventional satellites in interplanetary space missions. Future development of these small satellites requires the application and use of passive thermochromic layers to achieve good thermal control for longer mission life and cost-effective launches. Thermochromic vanadium dioxide (VO2) thin films are being considered as an imminent prospect as a passive smart radiator coating (SRCs) for heat regulation in nano and microsatellites. Materials used in space missions can be subjected to various types of radiation including neutrons, gamma, gases, and heavy ions. The damage sustained can be quite complex and simultaneously degrade the characteristic properties of materials. The context of this mini review is detailed in two aspects, (i) overview of the meta-materials properties of VO2, synthesis, progress, and recent advances (ii) complemented by the radiation tolerance studies since spacecrafts interacts with radiation species of different energy and projectile doses.